Extra Moonsticks

2000-09-29 Thread David Higgon
and they can arrange something! Thanks to all who expressed an interest in the bulk order and also for your prompt payments! Best wishes, David Higgon London

Moonstick - list of recipients

2000-08-22 Thread David Higgon
Patrick Powers Me and my Dad! David Higgon London

Moonsticks to the UK

2000-08-21 Thread David Higgon
can then send me a cheque (PO in one case) once you've received it. Bye for now, David Higgon London

Moonsticks to the UK

2000-07-28 Thread David Higgon
got to you safely - more details anon. David Higgon London

Re: Dial lines drawn from gnomon

2000-02-09 Thread David Higgon
sun time, the line you get will be the same. I hope that helps! David Higgon London England

GPS

1999-08-13 Thread David Higgon
! All the best, David Higgon

Eclipses

1999-07-29 Thread David Higgon
, David Higgon

Re: Water Bucket

1999-07-16 Thread David Higgon
end up soaking too many of you through my suggestions! I hope I'm not too far off the mark in this explanation - it could have dire consequences come my exam in October!! David Higgon

Re conundrum

1999-04-09 Thread David Higgon
a clock gains / loses 10 seconds So in 45 days a clock changes by 1080hours x 10 seconds = 10800 seconds 10800 / 60 = 180 minutes 180 / 60 = 3 hours So on 17th March one clock will read 3 o'clock and the other 9 o'clock :( Sorry to disappoint you! David Higgon London

Solution to Conundrum

1999-04-07 Thread David Higgon
downloaded the message! Regards to all, David Higgon (never could resist a challenge!) London

Viscosity

1999-03-01 Thread David Higgon
at it, why not embrace decimalisation and have ... Internet Time! I for one won't be touching Internet Time with a barge pole, and thankfully I'll be long gone before there's enough of a difference between GMT and UTC to warrant its introduction ;-) David Higgon Young stick in the mud!

GMT and UTC

1999-02-25 Thread David Higgon
the slave?! David Higgon London, not too far from Greenwich ;-)

GMT and UT

1999-02-24 Thread David Higgon
Dear All, You'll have to forgive my ignorance, but what is the difference between GMT and UT? In practical terms, isn't 12:00 GMT the same time as 12:00 UT? If so, what's the point of renaming something we've already got? David Higgon London British Empire!

Planetary edges

1999-01-25 Thread David Higgon
the hemisphere facing the sun, it will be lit and will reflect light back towards the sun. Hence the entire disc of the earth should be visible to your observer all the time. I hope this is a) correct ;-) b) reasonably understandable David Higgon London p.s. Given the right facilities, you could do

Re: Setting up sundials

1999-01-21 Thread David Higgon
compass nor clock. David Higgon London

Re: Wood for dials

1998-12-17 Thread David Higgon
out very well. Presumably if it was used for clogs it must also be fairly durable. I have no idea as to the closeness of its grain or its stability, but it might be worth a try. Incidentally, it was the wood of choice for producing charcoal for gunpowder! David Higgon London

Re Window pane refraction

1998-11-27 Thread David Higgon
perpendicular. Hope this helps! David Higgon London

Re: Longitude rack

1998-09-17 Thread David Higgon
knowledge of such things is restricted to playing with Meccano as a child, so I don't know how easy it is to cut angled teeth for example, however my Meccano set had cogs with angled teeth so I suppose it can't be too difficult or expensive! Let me know what you think. David Higgon London

gnomon shape and EoT

1998-09-15 Thread David Higgon
Alberto, Yes it is, is the short answer. In fact you will need two shaped gnomons - one for the spring and one for the autumn. For each gnomon to stay in one piece, it has to have some notional diameter to which the EoT is added or subtracted. In the morning one side of the gnomon will cast

Spiral line solution

1998-08-28 Thread David Higgon
it for! David Higgon London

Spiral line solution extra

1998-08-28 Thread David Higgon
of curiosity (?!) or is there some practical application? David Higgon London

Re Language

1998-08-20 Thread David Higgon
... David Higgon London

Haiku

1998-08-19 Thread David Higgon
! More anon, David Higgon London

Re Sign of EoT

1998-07-10 Thread David Higgon
what the dial time is ;-) David Higgon Putney London

Re Translation

1998-07-09 Thread David Higgon
Mario, Degrees, Minutes (')and Seconds (). David Higgon

Re. What happens when 2

1998-05-21 Thread David Higgon
Dear all, I've reconsidered my previous submission! The sun will not cross from one hemisphere to the other, but will always be in one or the other. It's difficult to explain this without pictures, but you probably all saw this before I did. There is still the slight problem of the two days a

Re: Latitude with pegs and string

1998-04-22 Thread David Higgon
to know!! I hope I haven't made any blindingly obvious errors in my above analysis - if I have I'm sure someone will be kind enough to point it out to me ;¬) Best wishes, David Higgon 51° 27' N 0° 15' W

Re: Two Basic Questions

1998-04-09 Thread David Higgon
William J Daciuk wrote: I am a beginner at dialing. Was working in backyard yesterday with wooden mockup of horizontal dial I'll be making later in metal, and two questions arose: 1. If the angle of the gnomon is too large (e.g., 42 degrees here at 40 deg north), will that make the dial fast or

Re Optical Illusions Part II

1998-03-27 Thread David Higgon
will not be parallel to your roof. The shadow's distance from the wall will then vary accordingly. David Higgon 51°27' N 0°15' W

Re Optical Illusions

1998-03-26 Thread David Higgon
Dear all, If I step out into my yard and look up the surface of my roof, does the altitude in the sky change as I move my eyes from right to center to left along the roof line into the sky? I think I know the answer to this, but would like verification. Unless you live in a circular house

Picture re Photo process

1998-01-21 Thread David Higgon
Further to my posting re a laminating machine at PCB makers, attached is a small picture (6.jpg) showing the sort of quality that can be achieved. David Higgon Attachment converted: MAC Hard Disk:6.JPG (JPEG/JVWR) (1F9B)

Re Photo mask process

1998-01-16 Thread David Higgon
the exception rather than the norm as Mike finds. If you want to try photo-transfer onto brass, perhaps finding a sympathetic PCB manufaturer is your best first step! I hope this is helpful and hasn't duplicated too much of what has gone before. David Higgon Connoisseur Sun Dials 51°27' N0°15